Voking announced a few new aluminum waterproof Sony cases, that are rated for 100m. The cases for the a6000, a6300, a7 and a7mII, are now available for order on Amazon.
Voking a6000 + 16mm-50mm
Voking a6300 + 16mm-50mm
Voking a7 + 18mm-55mm
Voking a7 Mark II + 18mm-55mm